KYORITSU 6315 Instruction Manual - Manual (Page 150)

KEW6315 Items measured at Harmonics measurement
KEW6315 - 148 -
Total harmonics current phase angle θAk [deg]
Displayed digit 4-digit
Display range 0.0º to ±180.0º
Equation






−
= −
cki
ckr
ck
A
A
A 1 tan
θ
c: Measurement channel θA
1k ,
θA
2k ,
θA
3k ,
θA
4k
A: Harmonics current
k:Harmonics of each order
r: Real number after FFT conversion,
i: Imaginary number after FFT conversion
Harmonics voltage current phase angle difference θk [deg]
Displayed digit 4-digit
Display range 0.0º to ±180.0º
Equation
ck ck ck
V A
θ θ θ
−
=
c: Measurement channel, k: Harmonics of each order
1P2W-1 to 4
θ
1k
, θ
2k
, θ
3k
, θ
4k
,






= −
sumk
sumk
sumk
P
Q
1 tan
θ
1P3W(3P3W)-1
to 2
θ
1k
, θ
2k
,






= −
k sum
k sum
k sum
P
Q
1
1
1
1
tan
θ
θ
3k
, θ
4k
,






= −
k sum
k sum
k sum
P
Q
2
2
2
1
tan
θ






= −
sumk
sumk
sumk
P
Q
1
tan
θ
3P3W3A(3P4W)-1
θ
1k
, θ
2k
, θ
3k
,






= −
sumk
sumk
sumk
P
Q
1
tan
θ